Buffer wheel



Sept. 12, 1933. J. H. M GRADY ET AL 1,926,312

' BUFFER WHEEL Filed June 17 1932 2 Sheets-Sheet 1 l. mun

grwc/wtob JoZn 17. M Grady MIT. Cypher,

Sept. 12, 1933- J. H. MCGRADY ET AL BUFFER WHEEL Filed June 17 1932 2 Sheets-Sheet 2 Jain) H. M Grady 14 H. CypZer' lilo M Patented Sept. 12, 1933.

BUFFER WHEEL I I John -MeGrady and Westly R.. Cyp her, F 76- v mont, Ohio Application June 17, 1932. Serial No. 617,912 g V '8.Claims. 01.. 51190).

Thisinvention relates to improvements in buffer wheels "of the type generallymade of some pliable material, such as canva's, muslin, flannel, soft felt, or the like.

: The primary object of the present invention is to provide a ventilated bufierwheel whichfcan be rotated at, high speedand,; still do its work 1 radial slitslS extending substantially from the without excessive heating. V V

Another obiectis to provide a buffer wheel that can be used very einciently in concave articles 'or inside of cylindrical articles, on account of the flexibility and resiliency, of such wheels.

Thedesign and construction of the wheel are such that it can be madeas flexible or'rigid as required r for most any class of work, or any finish that can be obtained by'bufiing. Y

A further objectisltosupply a buffing wheel which'can bemadei'without waste of materials,

" flat and the ring assumes a z'ig-zag ,shape', or forms a zig-zag ring about the hub 2210mm: disk. '7

and one which is much'more durable than the wheels heretofore known.

A stillfurtherobject is't'o supply a bufiing wheel with recess es formed therein for retaining compounds, such as lubricants or abrasives used in the process of polishing, bufiing or the like.

With the foregoing objects outlined and with other objects in view which will appear as the description proceeds, the invention consists in the novel features hereinafter described in detail, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

e In the drawings,

Fig. 1 is a plan view of the disk which forms the body of the wheel. Fig. 2 is a similar View with alternate sectors W of the disk bent upwardly to form a cylinder at I the centralportion of. the disk. 7

Figs. 3 and 4 are edge views respectively of the disks shown in Figs. 1 and 2.

4 Fig. 5 is a perspective view of a skeleton ring or reinforcement which is incorporated in the wheel during the-manufacture of the same.

Fig. 6 is a view like Fig. 4, but with the skeleton ring slippedover the cylindrical portion of the disk.

Fig. 7 is an edge view of the disk shown in Fig. 6, after the bent sectors have been returned to original position.

Fig. 8 is a plan view of the structure shown in Fig. 7.

F'g. 9 is a view similar to Fig. '7 after the side disks have beensecured to the body and skeleton ring.

Fig. 10 is a perspective view of one of the side .disks.

Figs. 11 to lfi'inclusive are plan viewsof a come pleted unit, and illustrating various ways of stitching or otherwise securing the parts together.

I Referring to the drawings, 16 designates a disk which may be made of any suitable textile 0171 fibrous material, such as felt or the like, provided with a central'aperture I? and also provided with ring 20, formed of layersof textile or other suit able pliable material, i slipped over the, bent sectors, as shown at'2l inFig. 6. Subsequently,"

the bent sectors are returned to original position," asshown in Figs. '7 and 8, sothat the disk isjagain Ihenside disks 23 of layers of someipliable stitched or otherwise secured together in any suitable way. For example, radial rows of stitching $0 24 may be used, as shown in Fig. 11, or V-shaped lines of stitches 25 may be used, as in Fig. 12. Fig. 13 shows circular rows of stitches 26; while in Fig. 14 the line of stitching 27 is of spiral shape. Fig. 15 shows parallel rows of stitching 28; Obviously, any preferred form of stitching may be used, or combinations of the same may be employed, andif desired, similar stitching may be used on the units shown in Figs. 7 and 8 before the side disks 23 are attached. m

Due to the zig-zag form of the skeleton ring, recesses 29 are provided within the unit, and these recesses may be used to retain various compounds, lubricants, abrasives, etc. j

Manifestly, a wheel of any desired width or thickness may be made by placing the finished units side by side on the buiTer wheel shaft.

'. While we have shown the disk 16 made of twelve sectors 19, nevertheless it will be understood that there is no restriction as to the num- 1 her which may be employed, as we have found in practice that disks made with four to sixteen sectorslare very satisfactory.

It is also possible to make the disk from a plurality of pieces of material, stitching or otherwise 5 securing them together. In this way the material cut to form the center of ring 20 (Fig. 5) can be utilized.

From the foregoing it is believed that the construction and advantages of the invention will be readily understood by those skilled in the art, and it is apparent that changes may be made in the details disclosed without departing from the spirit of the invention, as expressed in the claims.

What is claimed and desired to be secured by Letters Patent is:

1. A buffer wheel unit comprising a disk of pliable materialvprovided with slits, a skeleton ring associated with said disk, certain portions of the disk being positioned at one side of said ring and other portions of the disk being arranged at the opposite side of the ring, and means securing the ring and disk together.

2. A buffer wheel unit comprising a disk of 1 pliable material provided with radially arranged slits extending from its hub portion to its periphery, a skeleton ring associated with said disk, certain portions of the disk being positioned at one side of said ring and other portions of the disk being arranged at the opposite side of the ring, and means securing the'ring and disk together. 7

3. A bufier wheel unit comprising a disk of pliable material having slits extending from its hub portion to its periphery, a skeleton ring associated with the disk, certain portions of the disk beingpositioned at one side of said ringand' other portions of the disk being arranged at the opposite side of the ring, and means securing the ring and disk together, saidring being of zigzag form circumferentially."

4. A buffer wheel unit comprising a disk of pliable material having slits extending from its hub portion to its periphery, a skeleton ring assoring and disk together, the last mentioned means including stitching.

5. A bufier wheel unit comprising a diskof flexible material or the like, having slits extending from its hub portion to its periphery, a skeleton ring associated with said disk, certain portions of the disk being positioned at one side of said ring and other portions of the disk being arranged at the opposite side of the ring, and means securing the ring and disk together, the last mentioned means including, side disks and means securing the side disks to the ring and disk.

6; A bufier wheel unit comprising a disk of flexible material or the like, having slits extending from its hub portion to its periphery, a skeleton ring associated with said disk, certain portions of the disk beingpositioned at one side of said ring and other portions of the disk being arranged at the opposite side of the ring, and means securing the ring and disk together, the last mentioned means including stitching extending from the hub'portion to the peripheral portion of the disk.

7. A bufier wheel unit comprising a disk of pliable material or the like, provided with radially disposed slits forming sectors, a skeleton ring of flexible material incorporated within the disk, certain of the sectors being positioned at one side of said ring, and alternate ones of the sectors being arranged at the opposite side of the ring, and means securing the sectors andring together.

8. A bulfer wheel unit comprising a disk of pliable material or the like, provided with radially disposed slits forming sectors, a skeleton ring of relatively soft flexible material incorporated within the disk, certain of the sectors being positioned at one side of said ring, and alternate ones of the sectors being arranged at the opposite side of the ring, and means securing the sectors and ring together, the last mentioned means including side disks and lines of stitching'connecting the disks and ring.

JOHN H. McGRADY. WES'I'LY R. CYPHER. 

